WorksheetsConcentration and Solutions Worksheet
Total questions: 50
Worksheet time: 25mins
Which of these is the most acidic?
pH = 2
pH = 7
pH = 4
pH = 9
Product of KOH + H2SO4 is ...
KSO4 + H2O
KSO4 + H2O
K2SO4 + H2O
K2SO4 + 2H2O
Which of these is the formula of a base?
NaOH
NaCl
Cl2
HCl
The taste of acids is...
sour
bitter and sweet
sweet and salty
salty
What is created when acids react with metal?
a base
hydrogen gas
nothing
salt
What is titration?
Neutralization reaction
Normal chemical reaction
Combustion reaction
Redox reaction
A substance has a slippery feel and a pH of 13. What is this substance?
A base
An acid
A salt
Water
Product of acid and base reaction is ... .
salt and oxygen
salt and water
salt and hydrogen
salt and carbon dioxide
Product of KOH + HCl is ... .
3KCl + 2H2O
2KCl + 2H2O
KCl + 2H2O
pH of 11.... acid or base?
base
acid
neutral
neither
How much volume of a 1.0 M HNO₃ is needed to titrate 60 mL of a 0.20 KOH?
12 mL
6 mL
24 mL
60 mL
A solution with more hydroxide ions present than hydrogen ions .... ?
base
acid
neither
both
Which of the following pH would be considered acidic?
3
12
7
8
How much volume of a 0.15 M KOH is needed to titrate 75 mL of a 0.5 M HCl?
22.5 mL
9 mL
23 mL
95 mL
Both solutions have equal volumes of 30 mL. Which solution is more concentrated?
Solution X
Solution Y
They have the same concentration
What volume is needed to dissolve 0.45 moles of NaCl in 0.5 M solution?
0.5 mL
450 mL
50 mL
900 mL
If 14.0 grams of NaCl (1 mol NaCl = 58.44 g) dissolve in 0.50 liters of water, what is the solution's molarity?
0.48 M
2.1 M
7.0 M
28 M
What is the correct unit used to measure volume in the molarity formula?
L
mL
cm
g
How many grams of potassium hydroxide are needed to make a 1.2m solution made with 1.5kg of water?
101g
132g
44.9g
58.5g
What is the molarity of 5.00 g of NaOH (1 mol NaOH=40.0 g) in 750.0 mL of solution?
.167 M
1.20 M
1.39 M
2.50 M
What is the concentration of a solution made of 0.97 moles of NaCl is dissolved in 3.7 L of water?
0.26 M
3.8 M
0.22 M
2.09 M
Determine the molarity for 5.0 mol KCL in 7.500 L of solution
0.6 units
0.4 units
3 units
0.8 units
What is the molarity for 0.444 mol of CoCl2 in 1500 mL of solution?
0.30 M
3.4 M
3.8 M
0.44 M
How many moles of NaCl must be dissolved in 500.0 mL of solution to produce 1.15 M solution?
0.575 mol
575 mol
0.434 mol
434 mol
Molarity is abbreviated
M
m
MOL
mol
How many liters of potassium chloride KCl must be in a solution with 0.75 moles and a molarity of 1.5?
0.500 liters
0.250 liters
1.00 liters
2.00 liters
What is an electrolyte?
A substance that dissolved in water and produces ions.
A substance that doesn't dissolve in water.
A substance that dissolves in water and doesn't produce ions.
A substance that is a solid at room temperature.
A great conductor of electricity is a:
strong electrolyte
weak electrolyte
What is a weak electrolyte?
A substance that partially ionizes in water.
A substance that completely ionizes in water.
A substance that doesn't ionize in water.
A substance that doesn't have ions.
Nonelectrolytes.....
conduct a large amount of electricity
does not conduct electricity
conducts a small amount of electricity
What is a nonelectrolyte?
A substance that dissolves in water and produces ions.
A substance that is a solid at room temperature.
A substance that dissolves in water and doesn't produce ions.
A substance that melts at room temperature.
How does crushing a solute make it dissolve faster in a solution?
increases the surface area of the solute
decreases the surface area of the solute
Determine the molarity for 0.443 mol of CoCl2 in 0.654L of solution?
0.68 M
68 M
0.068 M
0.0068 M
Determine the molarity for 2.856 mol KCl in 5.5 L of solution?
0.52M
0.85M
0.56M
0.99M
A solid solute cannot dissolve in a liquid. It is called:
soluble
immiscible
insoluble
all of these are true
How many moles of Na2CO3 are in 20.0L of 4.00M solution?
80 mol
5 mol
0.2 mol
100 mol
A solute that contains polar molecules will dissolve in a solvent that contains
polar molecules
nonpolar molecules
bipolar molecules
equal-sized molecules
What is the equation for finding molarity?
M = moles of solute/ liters of solution
M = grams of solute/ mL of solution
M = moles of solute/ mL of solution
M = grams of solute/ liters of solution
Molarity is defined as:
moles of solute dissolved in liters of solution
moles of solvent dissolved in liters of solution
basic unit of volume in the metric system
moles of solution dissolved in liters of solute
Acid, Base or Both: can be slippery
Bases
Acid
Both
Neter
Acid, Base, or Both: bitter taste
Base
Acid
Both
Neter
Acid, Base, or Both: produces hydroxide ions (OH-)
Acid
Base
Both
Neither
Use the solubility Curve: How many grams of KNO3 will make a saturated solution at 50°C?
83 grams
17 grams
120 grams
KNO3
If 250 g of potassium nitrate are mixed with 100 g of water at 10°C, how much will not dissolve?
100 g
230 g
130 g
250 g
Which solution is the most concentrated?
A
B
C
D
If you have 50 g of NaNO3 in 100 g of water at 10°C. This best matches the description of...
super saturated
unsaturated
saturated
full
Water is able to dissolve many substances, and is commonly known as the —
universal solvent
universal element
universal compound
universal solute
A teacher asks the students to slow down the salt crystal's dissolution in water. What should the students do to slow down the dissolving process?
Increase the temperature of the water
Stir the solution vigorously
Crush the salt crystals
Use cold water
What does the term concentrated mean?
There is a large amount of solute
There is a small amount of solute
There is a large amount of solvent
The mixture is heated
A solution which has a concentration that exceeds its predicted solubility at a certain temperature and pressure would be —
supersaturated
saturated
unsaturated
dilute
